I am Kamen Rider who reverses dimensions

Kiritsugu Emiya, known to the outside world as the "Magician Killer," was turned into a ruthless assassin due to his tragic childhood. Needless to say, he was a killer-like figure rejected by the Mage's Association, but it was precisely because of those methods that he caught the attention of the Einzbern family and was hired by them.

To fulfill his long-cherished wish of saving everyone, he married into the Einzbern family and participated as their representative nine years later.

However, after the Holy Grail War began, Berserker, disguised as Rider, kidnapped Irisviel. Kiritsugu Emiya used Command Spells to send Saber to retrieve Irisviel, but it was too late, and Irisviel was still killed.

To fulfill his long-cherished wish, Kiritsugu Emiya suppressed his grief and continued fighting, ultimately engaging in a desperate battle with his final opponent at the site where the Holy Grail descended.

During the final battle, Kiritsugu Emiya discovered the truth about the Holy Grail's corruption. The "all evil of this world" had transformed into his deceased wife, attempting to shake his beliefs. However, Kiritsugu ultimately killed the false "Irisviel," but was thus cursed by the "all evil of this world."

Subsequently, Kiritsugu Emiya unhesitatingly used two Command Spells to force Saber to destroy the corrupted Holy Grail. However, because he was indoors, he failed to notice the "hole" that had appeared in the sky due to the Holy Grail. As a result, after the Holy Grail was destroyed, the curse within it leaked out through the hole, causing a massive fire in Fuyuki City. Amidst the sea of ​​flames, death ensued.

After the Holy Grail War ended, Kiritsugu Emiya found a dying boy in the fire-ravaged land. He revived the boy and then went into seclusion as the boy's foster father.

But that great fire also turned the purpose and beliefs that the man named Kiritsugu Emiya once possessed into ashes. What returned from that wasteland was nothing more than a wrecked body with only a beating heart.

After retiring to seclusion, he avoided all contact with magicians and lived a peaceful life. However, he consistently traveled to Einzbern, Germany, hoping to rescue his biological daughter, Illyasviel von Einzbern, but to no avail.

At the same time, due to the curse of evil in this world, his body is gradually weakening. His hands and feet are atrophying, his vision is beginning to blur, and he has completely lost the ability to perform magic. He is almost no different from a seriously ill patient. As he gradually loses his abilities, it is very difficult for him to even enter the forest barrier. He is also powerless to find the starting point of the barrier. He can only wander in the wind and snow until he dies.

Just as Kiritsugu Emiya was in despair, 'heavenly fire' descended...

“Gengo, Kiritsugu, he loves me.”

After quickly and briefly learning about Kiritsugu Emiya's memories, Illya held the Holy Grail embryo and said with tears in her eyes, but the girl's smile gradually became more and more stiff, and finally she couldn't help but burst into tears. After all, regardless of love or hate, Kiritsugu Emiya was dead and gone forever.

Seeing Illya weeping, Emiya's expression became somewhat subtle. At the same time, he noticed Genji's gaze fixed on him. Because of Illya's trust, Genji had also witnessed Kiritsugu Emiya's life, and that man...

"...I am not him now."

Under Genji's gaze, the Servant Emiya paused for a moment, then said softly:

"But on my side, Kiritsugu does often look at the moon and think of someone."

"Kiritsugu!!"

Hearing this, Illya's crying became even more sorrowful. Genji looked helplessly at the Servant Emiya. He had hoped that he could help comfort Illya and stop the child from crying anymore, but instead, he added insult to injury.

"Mashu, are you feeling unwell?"

Meanwhile, on the other side, Fujimaru Ritsuka noticed that something was wrong with Mashu, so she asked her in a low voice. The pink-haired girl tilted her head in confusion and said in a very subtle tone:

"Um... senior, let me clarify first, I'm not joking, and I'm not injured at all, but... but... when did that gentleman carrying Illya appear? I... I... I suddenly can't remember..."

"Eh?"

This answer made Fujimaru Ritsuka's eyes widen. She knew her little eggplant's personality well enough; she was definitely telling the truth in this kind of situation. She really didn't remember Genjo. Why...why was that?!

and many more!

At that moment, Fujimaru Ritsuka remembered Gengo.

Thinking of this, Fujimaru Ritsuka was about to ask Genji what was going on, but before that, golden light shone, and the Holy Grail in Illya's hand and the Holy Grail obtained from the previous battle both emitted a soft light. Under the illumination of the light, this last simulated singularity began to dissipate, and the ominous evil of this world was completely annihilated in the radiance of this power.

However, even after the simulated singularity disappeared, the outside world was still a scene of apocalypse. Although the process of world collapse had stopped, how could life continue in such a world?

"Let's give it a try first."

Gengo held up the Holy Grail. It was the perfect Holy Grail, the one that contained all the mysteries of the world. If one made a wish upon it, perhaps the world could be revitalized, and everything in the world, including 'time' and 'space', could come alive. Only then could Gengo continue with his ideas.

"Ah."

The task of making a wish was entrusted to Ilya, whose family was one of the architects of the Holy Grail War. She was also originally one of those who would have participated in the Holy Grail War, so she needed to know more about the 'Holy Grail' in order to use the most precise language to determine the wish to restore the world.

But as Ilya made her wish using the standard magic incantation, suddenly, terrifying magical power erupted on the land where they stood. Even Genji hadn't anticipated this sudden attack. In the blink of an eye, he could only shield Ilya and Fujimaru Ritsuka with his body. The terrible magical impact tore open all the wounds on his body that had just healed. Ilya and Fujimaru Ritsuka stared blankly at each other, because in that instant, they were both stained with someone's blood.

At the same time, because of this sudden attack, the Holy Grail, which had been shining brightly, dimmed, and its mystery also faded.

"Damn it, what is that thing now? Show yourself!"

Emiya clutched his chest, roaring angrily. To be honest, in his memory, this was the most terrifying event he had experienced since becoming a Heroic Spirit. It was so terrifying that he had to rely on the power of others to survive the whole thing. And now this had happened again. He felt that the pressure was too much.

"Hmph, how rude! Humans are indeed not even as good as urinating."

Suddenly, a voice full of contempt came from the sky. Then, a brilliant light illuminated the dark red sky, and the halo that Ilya had seen before reappeared in the sky. But this time, the halo was much larger than before, so large that it seemed to surround the earth.

But Fujimaru Ritsuka and the others from Chaldea knew exactly what it was. What appeared at first glance to be a halo surrounding the Earth was actually an aggregate of hundreds of millions of rays of light. Each ray possessed immense destructive power comparable to the Sword of Excalibur, and nothing on Earth could rival the heat of this halo.

This is suspected to be the cause of the burning of human beings!

Just as Fujimaru Ritsuka and the others were on high alert, a figure gradually emerged from the halo. He had golden eyes and white hair, wore a rather gorgeous magic robe, and had slightly dark skin. But no matter what the newcomer looked like, he exuded contempt for humans.

"This is really interesting. They've completely deciphered my initial experimental site. When I saw the light of reason about to shine here, I thought I was seeing things."

The visitor casually commented on everything he saw:

"But humans are so foolish, actually daring to dream of saving such a planet, it's laughable."

Who are you?

Emiya shielded Fujimaru Ritsuka behind him and questioned the newcomer in a low voice, but the newcomer only snorted coldly. In an instant, Emiya felt as if he had been seriously injured, but fortunately, Genji realized what was going on in advance and reached out to pull him up, thus preventing him from being fatally hit.

"As a human being, it's astonishing that I possess such perception."

The visitor looked at Yuanxiang with great interest and said softly:

"As a reward, I'll tell you this: Solomon, the Magic King Solomon. That should be easy to remember, right?"

"No, you are Goetia!"

Fujimaru Ritsuka spoke up in rebuttal, her eyes fixed on the figure in the sky. This incredibly powerful newcomer instinctively reminded her of the information the doctor had given her in Chaldea, which contained speculations and descriptions about the Burning of Humanity and Goetia. Based on this, she was quite confident in identifying the newcomer.

"Hmph, what difference does it make? Solomon is me, and Goetia is me. To you humans, there is not much difference."

Goetia said softly in a disdainful tone:

"All you need to know is that I am the one who will end humanity. It has certainly brought me some amusement that you were able to access my experimental site. However, you should just die already. This pointless chatter should end here."

As soon as he finished speaking, Getia casually waved his hand, and a ray of light shot out from the huge halo, heading straight for the direction where Yuanxiang and the others were.

"Beg for help! Speak out your fears! It's time to drown in the sea of ​​misery! This is the only salvation for you."

"Lord Chaldeas (Imaginary Noble Phantasm Simulation / Foundation of Humanity)!"

Seeing this terrifying attack, Mash roared and instinctively activated her Noble Phantasm, creating a powerful protective barrier, a magical barrier, and a small section of the city wall in front of her. Although it also had the effect of reflecting damage, under the attack of the aura, Mash could only pray that she could protect the people behind her.

"RhoAias (Sevenfold Ring of the Blazing Sky)"

Such a terrifying attack, Shirou naturally wouldn't let Mash bear it alone. He used magic to project his Noble Phantasm, unfolding a seven-petaled defense above Mash's fortress, each petal powerful enough to rival an ancient city wall.

The prototype of this Noble Phantasm is the bronze shield covered with seven layers of cowhide that Ajax used to block Hector's javelin in Greek mythology. After being passed down in mythology, its scope was expanded to a "conceptual weapon" that prides itself on having absolute defense against projectile weapons, and it was thus sublimated. This is also the only defensive weapon that Emiya is good at.

But that's not enough; the two of them alone cannot stop the attack of this halo!

Gengo pressed 'Ccylone' and 'Joker' simultaneously, transforming into the 'Cyclone·Joker·Xtreme' form. After summoning the Prism Shield, four beams of light data merged into it, triggering his ultimate attack!

"Cyclone! MaximumDrive!"

"Heat! Maximum Drive!"

"Luna! Maximum Drive!"

"Metal! Maximum Drive!"

As the sound effects began, a powerful barrier of energy unfolded around the prism-like radiance, and in the next second, the terrifying beam of light crashed down.

"Hmph, foolish."

Although Genji and the others successfully withstood the attack...

"hateful....."

Emiya gritted his teeth, using all his magic to maintain the existence of RhoAias (the Sevenfold Ring of the Sky), but his defense was reduced to its last piece in the blink of an eye. Mashu struggled to hold up the shield in her hand, but her steps still couldn't stop her from sliding backward. Rather, if it weren't for the Prism Radiance of Genshin Impact blocking most of the damage, they would have already been defeated.

No, I have to hold on!

Mash pressed her head against the shield, trying to stop herself from retreating. Although she was only a Demi-Servant, and although she didn't even know which Heroic Spirit's power she had received, her desire to protect her seniors and everyone else was unwavering. Now that she had inherited the name Shielder, she could no longer retreat.

but......

That attack... was incredibly powerful!

I need more power, much more power!

Otherwise, I can't do anything!

Mashu's hands and forehead were already burning from the intense heat emanating from the shield, but she showed no sign of backing down. She was still trying her best to push forward, at least to stand beside Genji and share some of his burden.

Just then, a faint glimmer appeared on Mash's shield, as if some kind of power was awakening...

At the same time, Genji felt the impact, his cheeks beneath the mask flushed red from the shock of the halo. This was truly the culprit behind the burning of humanity; the power of 'Cyclone Joker Xtreme' alone was insufficient to completely contend with it. Since that was the case...

"Emiya, project a door, any door will do!"

Ok?

Upon hearing Gengo's sudden request, Emiya paused for a moment, but his actions were swift and decisive. He projected a door with his magic, which Gengo quickly pushed open. Then, the winds of Earth surged forth, and golden light shone upon Gengo. The power of 'Cyclone Joker GlodXtreme' surged within him. He drew the Prism Holy Sword, a dark aura swirling around its blade, and swung it with all his might. Although the sword's movement was slowed considerably by the terrifying beam of light, the energy attacks were completely obliterated by this ultimate power!

"oh?!"

This scene caused Goetia to let out a surprised sound. He hadn't expected that this guy in strange armor would possess such power. Goetia subconsciously tried to use his magic to explore the world on the other side of the door, but found that his magic couldn't pass through. This was partly because the world on the other side of the door resisted, and partly because the door was already occupied by the data of 'Cyclone·Joker·GoldXtreme', leaving no extra space for him.

"Interesting, interesting. I really misjudged you this time."

Goetia didn't take the failure to explore it to heart. As the pinnacle of magic, he knew about parallel worlds and such, so there was nothing to worry about. After all, the boy in front of him was much more interesting.

How should I put it? 'Blank space,' a perfectly perfect 'blank space,' literally a 'blank space' capable of containing everything. In a sense, the essence of this boy is quite similar to the 'origin' of this planet. Goetia is quite knowledgeable, but it really is...

"Hmph, it seems I almost missed something interesting."

Goetia smiled and looked at Gensou, saying:

"You are not human. Your existence is far more noble than theirs, at least in my eyes. Ha, I'll make an exception for you. Come, come to my side, and I'll allow you to live."

"........."

Gensou remained silent, continuing to draw upon the winds of Fuuto to strengthen the form of 'Cyclone·Joker·GoldXtreme'. At the same time, he quietly began to circulate the power of 'Joker', transmitting it to the planet beneath his feet.

"Ha, you don't think you can defeat me with that sword in your hand, do you?"

Goetia, now also intrigued, said softly:

"That's impossible. Do you want to hear why? Well, I'll tell you. Compared to those foolish humans, you clearly have the right to listen to my words."

Did you know? The integration of all the energy on Earth is that band of light, which, in the most ideal way, traces back to the moment this planet was born 4.6 billion years ago, returning to the origin of the world, and was born after harvesting all the energy.

However, there is only one Earth, and the amount of heat obtained from burning the Earth is limited. But the life forms living on the Earth's surface are different. No matter how much you kill them, they will continue to thrive.

So I created a singularity, severing the flow of history, causing a repulsion between the past and the future, endlessly squeezing out energy from the present to the past, and then converging it into this band of light. The heat you see is the very essence of this planet's heat, the traces of humanity from that era, all condensed together—it's practically the crystallization of human history. So tell me, how can you possibly defeat me?"